(3GdbWGY GdYGe ai GdeLJeY eJZjQ(B((3JLQHI eUQ(B) / s - (3eMehO GdeQGZis ([S.N] : (3OGQ GdeSJbHd GdYQHi , s, 1983)
Keywords: (3eUQs; (3GdbWGY GdYGes; (3GdGOGQI GdYGeIs; (3GdeDSSGJ GdYGeIs